There are few devices which gets a late official update. And if you are the person who hates waiting and own a T-Mobile Samsung Galaxy Tab 7.7 SGH-T859 and wants to have your hands on official Android 4.0.4 Ice Cream Sandwich firmware then you can always have a another way to update your device officially and manually. And the advantages of this device running on Ice Cream Sandwich is-faster stock browser, smoother UI, new multitasking menu, battery life, and all the other things that you could think of.